What is a FOB File?

How to Open, Edit, & Convert FOB Files

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A file with the FOB file extension is a Dynamics NAV Object Container file created with Microsoft's business management software Microsoft Dynamic NAV. These are files that reference objects like tables and forms that the Microsoft Dynamic NAV program can use.

The .FBK file extension is used to indicate an object backup file, which of course is also used in the Microsoft Dynamic NAV program.

FOB files may also be referred to as Navision Attain Object files.

How To Open a FOB File

FOB files can be opened with Microsoft Dynamics NAV (it was previously called Microsoft Navision). In the development environment, first access the Tools > Object Designer option from the menu, and then File > Import in the new window to select the FOB file.

Finn's FobView is a small portable program (can run without being installed) that can be used to open FOB files as well as to compare two files for differences. It also supports FBK, TXT, and XML files that were created in Microsoft Dynamics NAV.

Note: If you can't open your FOB file with Microsoft Dynamics NAV, be sure you aren't confusing it with another, similarly named extension. Files that have the VOB (DVD Video Object) or FOW (Family Origins) file extensions, for example, do not open with the same program that FOB files open with.

I'm not entirely sure if this will work, but you may also be able to open FOB files with a text editor so that you can read the text version of the file.

Please know, however, that doing this won't make the file functional like if you were to open it with Microsoft's program. All you could really do is edit the contents of the file, like maybe any references that it has. My favorite text editor is Notepad++.

Some FOB files may instead be a type of image file exported with IBM FileNet Content Manager.

I'm not sure of the specifics but I know that some users of that software have had the program export an image with the wrong extension, as .FOB, even though it should be .BMP, .TIFF, or some other format. If this is how you got your FOB file, then renaming it with the proper file extension may be all you need to do to open it with your favorite image viewer.

If you find that an application on your PC does try to open the FOB file but it's the wrong application or if you would rather have another installed program open FOB files, see my How To Change the Default Program for a Specific File Extension guide for making that change in Windows.

How To Convert a FOB File

Microsoft Dynamics NAV should be able to export an open FOB file to a TXT file. This is likely accomplished through its File > Export menu.

The Finn's FobView program mentioned above can export a FOB file to CSV.

More Help with FOB Files

See Get More Help for information about contacting me on social networks or via email, posting on tech support forums, and more.

Let me know what kinds of problems you're having with opening or using the FOB file, what exactly you're trying to do with it, and then I'll see what I can do to help.

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